Barack Obama: “We're going to keep pursuing scientific breakthroughs.”

It's a way to honor her trailblazing leadership, and inspire visitors to follow in her footsteps.

They're meant to remind us of who we can be, to remind us of what's possible, so we can forge ahead.

That was fantastic. I was a little tall for it.

This idea that any suggestion or criticism that America was anything other than perfect is unpatriotic... is a suggestion that you hate your country.